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    • 4. 发明申请
    • Driving system of light emitting diode
    • 发光二极管驱动系统
    • US20070159434A1
    • 2007-07-12
    • US11651539
    • 2007-01-10
    • Cheng-Chi YenYung-Yuan HoYen-Chen Chen
    • Cheng-Chi YenYung-Yuan HoYen-Chen Chen
    • G09G3/36
    • H05B33/086H05B33/0818Y02B20/347
    • The invention relates to an LED current driving system. The LED current driving system comprises an LED driver. The LED driver comprises at least one LED driving unit for outputting a driving current to an LED. Each LED driving unit comprises a plurality of current sources and a plurality of switches. The switches are connected to the corresponding current source. Each switch controls the ON/OFF state of the corresponding current source in accordance with the duty cycle control signal and a current control signal. Therefore, by integrating the LED driver on the LCOS panel, the LED current driving system of the invention can decrease the pin number of the LCOS chip, the overall area and the system cost so as to improve the yield of the LED current driving system. Besides, the LED current driving system utilizes the current sources to form the driving current to stably and precisely control the driving current flowing through the corresponding LED so that the color quality of the image can be improved.
    • 本发明涉及一种LED电流驱动系统。 LED电流驱动系统包括LED驱动器。 LED驱动器包括用于向LED输出驱动电流的至少一个LED驱动单元。 每个LED驱动单元包括多个电流源和多个开关。 开关连接到相应的电流源。 每个开关根据占空比控制信号和电流控制信号控制相应电流源的ON / OFF状态。 因此,通过将LED驱动器集成在LCOS面板上,本发明的LED电流驱动系统可以降低LCOS芯片的引脚数,整体面积和系统成本,从而提高LED电流驱动系统的产量。 此外,LED电流驱动系统利用电流源形成驱动电流,以稳定且精确地控制流过对应的LED的驱动电流,从而可以提高图像的色彩质量。
    • 6. 发明授权
    • Driving system of light emitting diode
    • 发光二极管驱动系统
    • US07724220B2
    • 2010-05-25
    • US11651539
    • 2007-01-10
    • Cheng-Chi YenYung-Yuan HoYen-Chen Chen
    • Cheng-Chi YenYung-Yuan HoYen-Chen Chen
    • G09G3/32
    • H05B33/086H05B33/0818Y02B20/347
    • The invention relates to an LED current driving system. The LED current driving system comprises an LED driver. The LED driver comprises at least one LED driving unit for outputting a driving current to an LED. Each LED driving unit comprises a plurality of current sources and a plurality of switches. The switches are connected to the corresponding current source. Each switch controls the ON/OFF state of the corresponding current source in accordance with the duty cycle control signal and a current control signal. Therefore, by integrating the LED driver on the LCOS panel, the LED current driving system of the invention can decrease the pin number of the LCOS chip, the overall area and the system cost so as to improve the yield of the LED current driving system. Besides, the LED current driving system utilizes the current sources to form the driving current to stably and precisely control the driving current flowing through the corresponding LED so that the color quality of the image can be improved.
    • 本发明涉及一种LED电流驱动系统。 LED电流驱动系统包括LED驱动器。 LED驱动器包括用于向LED输出驱动电流的至少一个LED驱动单元。 每个LED驱动单元包括多个电流源和多个开关。 开关连接到相应的电流源。 每个开关根据占空比控制信号和电流控制信号控制相应电流源的ON / OFF状态。 因此,通过将LED驱动器集成在LCOS面板上,本发明的LED电流驱动系统可以降低LCOS芯片的引脚数,整体面积和系统成本,从而提高LED电流驱动系统的产量。 此外,LED电流驱动系统利用电流源形成驱动电流,以稳定且精确地控制流过对应的LED的驱动电流,从而可以提高图像的色彩质量。
    • 9. 发明申请
    • PIXEL UNIT FOR A DISPLAY DEVICE AND DRIVING METHOD THEREOF
    • 用于显示设备的像素单元及其驱动方法
    • US20100007591A1
    • 2010-01-14
    • US12170631
    • 2008-07-10
    • Cheng-Chi YenHon-Yuan LeoJu-Tien ChengYen-Chen Chen
    • Cheng-Chi YenHon-Yuan LeoJu-Tien ChengYen-Chen Chen
    • G09G3/36
    • G09G3/3614G09G3/3655G09G2320/0238
    • A pixel unit and driving method thereof are disclosed. The pixel unit includes a switch, a storage element and a first multiplexer. The switch develops a charge transfer path according to a scan signal associated with a scan line. The storage element has a first electrode coupled to the switch and a second electrode coupled to a reference voltage for receiving a pixel voltage via the charge transfer path. The first multiplexer is coupled to the second electrode of the storage element for selectively providing the reference voltage with a default value and the reference voltage with a determined value to the second electrode of the storage element according to a modulating signal. The driving method enlarges the voltage range of the first electrode of the storage element for enhancing the contrast ratio of the display panel.
    • 公开了像素单元及其驱动方法。 像素单元包括开关,存储元件和第一多路复用器。 开关根据与扫描线相关联的扫描信号产生电荷转移路径。 存储元件具有耦合到开关的第一电极和耦合到参考电压的第二电极,用于经由电荷传输路径接收像素电压。 第一多路复用器耦合到存储元件的第二电极,用于根据调制信号选择性地将具有默认值的参考电压和具有确定值的参考电压提供给存储元件的第二电极。 驱动方法扩大了用于提高显示面板的对比度的存储元件的第一电极的电压范围。
    • 10. 发明授权
    • Pixel circuitry for display apparatus
    • 显示设备的像素电路
    • US08648787B2
    • 2014-02-11
    • US12371833
    • 2009-02-16
    • Cheng-Chi YenJu-Tien Cheng
    • Cheng-Chi YenJu-Tien Cheng
    • G09G3/36
    • G09G3/3648G09G2320/0233
    • A pixel circuitry for a display apparatus is provided herein. The pixel circuitry includes a first storage element, and a switching element composed of a plurality of switches. The first storage element has a first terminal receiving a pixel signal and a second terminal coupled to a first voltage. The first storage element is used for storing the pixel signal. The switching element includes a first switch and a second switch respectively conducted in response to a first signal and a second signal. Each of the first switch and the second switch has an input terminal coupled to a data line and an output terminal coupled to the first storage element. The cooperation of the first switch and the second switch has benefit of delivering the pixel signal without influence of body effect.
    • 本文提供了一种用于显示装置的像素电路。 像素电路包括第一存储元件和由多个开关组成的开关元件。 第一存储元件具有接收像素信号的第一端子和耦合到第一电压的第二端子。 第一存储元件用于存储像素信号。 开关元件包括分别响应于第一信号和第二信号而传导的第一开关和第二开关。 第一开关和第二开关中的每一个具有耦合到数据线的输入端和耦合到第一存储元件的输出端。 第一开关和第二开关的协作有利于传递像素信号而不影响身体效应。